<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<body>
<h1>欢迎进入登录界面</h1>
${msg}
<form action='<c:url value='/LoginServlet'></c:url>' method="POST">
用户名：<input type="text" name="username"><br><br>
<input type="submit" name="submit" value="提交">
</form>
</body>
</html>